TY - JOUR T1 - Quaternions and Projective Geometry JF - Philosophical Transactions of the Royal Society of London. Series A, Containing Papers of a Math. or Phys. Character (1896-1934) VL - 201 SP - 223 EP - 327 PY - 1903/01/01/ UR - http://dx.doi.org/10.1098/rsta.1903.0018 M3 - doi:10.1098/rsta.1903.0018 AU - Joly, C. ER -